Leveling-machine.



B. F. MAYO. LEVELING MACHINE.

APPLICATION FILED JURE 15,1911. Q 1,104,206. Patented July 21, 191;

4 SHEETS-SHBET 1,

. f. HAYS LEIVBLENG MACHENH ABEL-10.811103 111,21; mm;

Patenmd July 21, 1914 4 SHEETS- SHEET wlizwwz'mr B. F. MAYO.

LBVBLING MACHINE,

APPLICATION FILED JUNE 15,1911.

Patented July 21, 191 i 4 SHEETS-SHEET 3.

B. P. MAYO.

LEVELING MACHENE umxmnon TILED JUN}; 15, 1911.

Patented July 21, 1914.

4 8HEETS-SHEET 4.

"wifizas's as Q) 33% \niQmmv UNITED STATES PATENT OFFICE.

BENJAMIN F. MAYO, OF SALEM, MASSAC HUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

LEVELING MACHINE.

Application filed June '15,

To all whom it may concern: 1 I

Be it known that I, BnNJaMrn F. MAYO, a citizen of the United States,residin at Salem, in the county of Essex and t-ate of Massachusetts,have invented certain new and useful Improvements in Leveling-Machines;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention relates to sole leveling machines, and moreparticularly to that class of sole leveling machines which comprises aleveling device and a shoe supportmg jack relatively movable to changethe re ative longitudinal position of the leveling device and ack.

In the manufacture of turn shoes, it is customary to bend down themargin of the sole in certain types of shoes in order that the sole mayconform closely to the curvature of the last and enable the upper to bedrawn tightly to the wood in the subsequent lasting operation. .Afterthe shoe has been sewed, turned and relasted, it is then subjected tothe final leveling operation and great difficulty has been experiencedheretofore in devising a leveling machine which would completely removeand obliterate the ridge formed by the upstanding margin of the sole,and it is necessary in the better grades of shoes to supplement theoperation of the machine with a hand levelin opera tion in order toimpart the desired %nish to the shoe bottom.

The object of the present invention is to provide an improved levelingmachine of the class described which is simple in construction andefiicient in operation and which will impart the desired finish to thehighest grade of shoes without the necessity of a subsequent handoperation.

With this object in view, one feature of .the invention contemplates theprovision of a positively driven leveling roll which may be manipulatedto assume any desired inclination with relation to the line of travel.of the shoe.

A further feature of the invention consists in the combination withmeans for varying the relative longitudinal position and lateralinclination of the levelin roll and jack, of means for varying theinclina- Lebter ra n Patented July 21 1914. 1911. Serial No. 633,221.

;of travel of the shoe as the relative lateral "inclination of theleveling roll and jack is 'varied. Broadly considered, this feature of;the invent-ion is not limited to'the employment of a leveling roll incombination with a shoe supporting jack, but contemplates the provision,if so desired, of any suitable leveliing device.

Still further features of the invention comprise certain novel featuresof construction, combinations and arrangements of parts hereinafterdescribed and claimed, the advantages of which will be apparent to thoseskilled in the art from the following description. v

The several features of the present invention will be clearly understoodfrom an in; spect-ion of the accompanying drawings, in rwhichz- Figure 1represents a side elevation of a sole leveling machine embodying theseveral [features of the invention in their preferred form; Fig. 2 isadetail showing the roll supporting arm and the mechanism for incliningthe roll supported thereon; Fig. 3 is a plan view of the structure shownin Fig. 2; Fig. 4 is a section upon the line & 4 of Fig. 3, looking inthe direction of the arrows, and illustrating a portion of tl' mechanismfor driving the roll; Fig. 5 is a section upon the line 55 of Fig. 3,looking in the direction of the arrow, and 1'llustrat ing a detail ofthe pressure regulating mechanism for the leveling roll; Fig. 6 is asection upon the line 6'6 of Fig. 3 and illustrating a detail of theoperating'mechanism for movin the roll into an inclined position; Fig isa detail showing a plan view of a portion of the operating mechanism forinclining the roll; Fig. 8 is a section upon the line 88 of Fig. 7,looking in the direction of the arrow; and Fig. 9 is a section upon theline 99 of Fig. 7, looking in the direction of the arrows.

Certain parts of the machine are similar in their construction and modeof operation to the machine shown and described in the patent to Eppler,No. 1,004,155, dated September 26, I911, and will be only brieflydescribed herein in consequence thereof The sole leveling roll isindicated at 1 and is journaled in the forward end ofv a frame 2 whichis pivotally mounted at its rear end in tion'of the leveling rollrelatively to the line the upper rear portion of the machine frame 3.The shoe is supported upon a suitable 'tion conveniently accessible tothe operator.

jack 4 which is pivotally mounted at 5 on l the jack carrying frame 6.The shoe sup porting jack a is rocked laterally by thel operator and atthe same time is moved back 1 and forth beneath the leveling roll toeffect relative longitudinal movement of the leveling roll and shoesole. To this end, the jack carrying frame 6 is pivotally mounted in themachine frame at 7 and is oscillated by a connecting rod 8 and a crank9. To elfect the lateral movement of the jack, a handle 25, as shownclearly in Fig. l, is secured to the jack and progeets into a posi- Thecrank 9 is mounted upon a crank shaft 10 to which a partial rotation isimparted periodically in opposite directions by a large friction disk 11engaged alternately by a pair of small friction disks locked to thepulleys 12 and 13 respectively. A rocker frame 14-, is pivotallyconnected to the ma chine frame at 15 and is operated to throw either ofthe small friction disks into engagement with the friction disk ll by ahandle 16 conveniently accessible to the operator. A continuous rotationis imparted to the pulleys it? and 1.3 from the drive pulley l7 throu ha belt connection 18. To prevent an overtirow of the jack supportingframe in case the operator does not move the handle 16 at the propertime, an automatic stop mechanism is provided which indicated at 19. Theroll 1 is yieldingly held against the sole of the shoe by a treadle 22-which is connected to the roll supporting frame 2- througlra spring Theleveling roll is continuously rotated during the operation of themachine by the drive pulley -27 supported in the upper rear portion ofthe machine frame and operated from the main drive shaft through asuitable belt connec tion.

In turn shoes having extension edges, after the shoes have been turnedand relasted, the margin of the sole stands up obliquely from the mainbody of the sole forming a ridge and in all turn shoes the line ofstitches a a tendency to bulge the outer surface of the Sllf: and form aridge adjan. in order to mmpletoly Jl'iltr} either one or both of may heformed, it is ct them to a h movetoward I outed outward i solo. in thepresent in l in evelmg device is S'Wl\"l(l about a l i Ea i 1 the ini'ilei' that any desired in he ed with relation to i shoe. and as theshoe in moved longitudinally be ice a rubbing action direction impartedto the uplest and most efficient form which has yet been devised, aterlleveling roll is provided 1 longituilinal movement of the sleeve.

which is driven at a higher speed than the jack. The leveling roll isoperatively connected to the shoe supporting jack and upon rocking thejack laterally, the roll is inclined to the line of travel of the shoe.In order to accomplish the above ends, the leveling roll is connected tothe drive pulley 27 through a pair of bevel gears 28 and 29 whichoperatively connect the pulley with a shaft 30 journaled in the frame 2.The shaft 30 carries a bevel gear 31 upon its outer end which engageswith the upper face 33 of a double faced bevel gear 32. In order todrive the roll in any angular position, the gear 32 is mountedconcentrically with the vertical axis about which the leveling rollswivels. The roll 1 is driven from the gear 32 by a bevel gear 35engaging with the under face 34 of the gear 32. The roll is carriedbetween the two arms ofa yoke-shaped frame 36 which is provided with astud shaft 37 journaled vertically in the frame 2 and retained inposition by a bolt 38. The gear 32 is journaled upon a stud 39 threadedin the frame 36 in vertical alinement with the stud shaft 37. In orderto incline the leveling roll as the shoe supporting jack is tippedlaterally, suitable connections are provided between the roll and jack.The jack 4 is connected to a shaft 40 through a universal. joint 41 sothat upon tipping the jack the shaft to will be rocked proportionately.The shaft 40 is slidingly supported in a bearing member 43 provided withtwo downwardly projecting arms 44 and 45 between which a toothed segment46 is retained. The segment 46 is splined to the shaft to in order torock with the shaft but is retained against longitudinal movementtherewith by the downwardly projecting arms 44 and 45.

A transverse shaft 4-7 is fastened in the frame of the machine andslidingly supports a sleeve l8 upon which the bearing member 43 isjournaled, shown clearly in Fig. 6. The sleeve as is provided with aseries of teeth 49 upon its under face engaging with the teeth 50 formedupon the toothed segment, &6 so that upon an oscillatory move ment ofthe segment, the sleeve 48 will be moved longitudinally upon the shaft47. A hell crank lever, indicated at 51, has one arm "2 o 'ierativelyconnected to the sleeve 48 in order to rock the hell crank upon a As heshoe supporting jack 18 the segment 4-6 will be rocked correspond iuglvand as the jack is inpved back and forth beneath the leveling roll, thebearing member L3 and the toothed segment so will he rocked about theshaft 4'7. As it is only desired to utilize the longitudinal movement ofthe sleeve 48 imparted by oscillating the toothed segment about t" axisof the shaft to, the sleeve 48 is prev (1 with a slot on tippedlaterally,

tending throughout one half the circumference, as shown clearly in Fig.8 and a short shoe 53 having the same width as the slot issupported uponthe end of the arm 52 and is seated in the slot. ln order to allow afree longitudinal movement of the sleeve 48 and the shoe 53, the bearingmember 43 is cutaway asshown clearly in Fig. 7. The rocking movement ofthe bell crank 51 is communicated to a rod 55 which is connected at oneend to the second arm 54 of the *hell crank. An arm is pivotally mountedat 57 on the frame of the machine and the opposite end of the rod isconnected to the arm 56 midway of its ends. The outer end of the-arm 56is connected to one side of the yoke 36 through a link 58 and anupstanding stud 59 mounted upon the yoke, so that upon rocking the bellcrank 51 the yoke-36 inclined correspondingly.

The operation of the machine is as follows: Assumin that the shoe hasbeen propcrlv jacked, the-control lever is then manipulated to start themachine, whereupon the shoe supporting jack is moved slowly forward tobring the toe of the shoe beneath the leveling roll. As the levelingroll engages with the sole and is progressively advanced longitudinallyof the sole, the operator ti s the jack to incline the shoe laterally oftlie roll. If the, jack is. tipped .to enablethe roll to bear upon theleft side of the shoe, the

roll, through the connecting mechanism, is inclined to the line oftravel of the shoe in such a manner that it exerts an outward rubbingaction which is directed toward the margin of the sole and which servesto obliterate the upstanding margin or ridge formed upon the surface ofthe sole. As t ie curvature of the edge of 'the sole varies, the jackmay be tipped more or less in order to vary the inclination of the rolland insure that the rubbing action shall always take place in the properdirection at every point upon the sole. When one side of the shoe isproperly leveled, the jack is tipped in the opposite direction and theleveling roll is made to assume a corresponding inclination to the lineof travel of the shoe inthe oppo site direction in order to rub out theridge upon the right side of the sole in the same manner as haspreviously been done with the left side of the sole. As the roll isdriven at a higher speed than the jack, the

rubbing action will always take place in the same direction irrespectiveof the direction in which the jack is moving. When the central portionof the sole is being leveled, the jack and leveling roll have norelative lateral inclination and the leveling roll is supported with itsaxis at right angles to the line of travel of the shoe in order to rubthe solelongitudinally.

From the above it will be obvious that the leveling roll isautomatically actuated to impart an outward rubbing action to eachmargin of the sole in order to smooth out and finish the same and toimpart a long-itudinalrubbing action to the central portion of theisoletpr a like purpose.

While itis preferred to employ the specific construction and arrangementof parts =showtn and described, it will be understood that thisconstruction and arrangement is not essential except so far as'speoifiedin the claims and may be changed or modified without departingfnom the broader featuresof the invention.

\Vhat is claimed -is 1. A leveling machine having, in combination,.ashoe supporting jack, a positively driven leveling roll arranged toassume any desired inclination with relation to the line of tlfl'VSlwfifthe jack to nub the surface of thesole outwardly toward the margin, andmeans for varying the relative longitudinal position and lateralinclination of the leveling-roll and jack, substantially as described.

2. A leveling machine having, in combination, a shoe supporting jacki aleveling device, moansfor varying the re ative longitudinal position andlateral inclination of the leveling device and iack, and means op eratedin varying the relative lateral inclination of the leveling device andjack for varying the inclination of the leveliugdevice .to the line oftravel of the jack as the lateral inclination of the leveling device andjack is varied, substantially as described.

3. A leveling machine having, in combination, a shoe supporting jack, aleveling device, means for varying the relative longitudinal positionand lateral inclination of the leveling device and jack, and meansoperated in varying the relative lateral in (-lination of the levelingdevice and jack for positioning the leveling device to rub the centralportion of the sole in a longitudinal direction and each margin of thesole in an outward direction, substantially as described.

4. A leveling machine having, in combination, a shoe supporting jack, aleveling roll swiveled about a vertical axis, means for rotating theroll, and means for, varying the relative longitudinal position of theleveling roll and jack, substantially as described.

5. A leveling machine having, in combination, a shoe supporting jack, aleveling roll, means for rotating the roll, connections between the shoesupporting jack and leveling roll for inclining the roll relatively tothe line of travel of the shoe as the jack is tipped laterally, andmeans for varying the relative longitudinal position and lateralinclination of the leveling roll and jack, substantially as described.

6. A leveling machine having, in combi-

